/*********************************************************************
 * Copyright (C) 2006 Andrew Khan
 * <p>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * <p>
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ***************************************************************************/

package jxl.biff.drawing;

import java.util.Arrays;

/**
 * Enumeration for the various chunk types
 */
class ChunkType {
    private byte[] id;
    private String name;

    private static ChunkType[] chunkTypes = new ChunkType[0];

    private ChunkType(int d1, int d2, int d3, int d4, String n) {
        id = new byte[]{(byte) d1, (byte) d2, (byte) d3, (byte) d4};
        name = n;

        ChunkType[] ct = new ChunkType[chunkTypes.length + 1];
        System.arraycopy(chunkTypes, 0, ct, 0, chunkTypes.length);
        ct[chunkTypes.length] = this;
        chunkTypes = ct;
    }

    public String getName() {
        return name;
    }

    public static ChunkType getChunkType(byte d1, byte d2, byte d3, byte d4) {
        byte[] cmp = new byte[]{d1, d2, d3, d4};

        boolean found = false;
        ChunkType chunk = ChunkType.UNKNOWN;

        for (int i = 0; i < chunkTypes.length && !found; i++) {
            if (Arrays.equals(chunkTypes[i].id, cmp)) {
                chunk = chunkTypes[i];
                found = true;
            }
        }

        return chunk;
    }


    public static ChunkType IHDR = new ChunkType(0x49, 0x48, 0x44, 0x52, "IHDR");
    public static ChunkType IEND = new ChunkType(0x49, 0x45, 0x4e, 0x44, "IEND");
    public static ChunkType PHYS = new ChunkType(0x70, 0x48, 0x59, 0x73, "pHYs");
    public static ChunkType UNKNOWN = new ChunkType(0xff, 0xff, 0xff, 0xff, "UNKNOWN");
}
